MSMBJ64CAE3 Equivalent & Substitute Parts

Part Overview

The MSMBJ64CAE3 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode operates with a reverse standoff voltage of 64V and provides clamping at 103V maximum, with a peak pulse current rating of 5.8A. The device is housed in a DO-214AA (SMB) package and is qualified to MIL-PRF-19500 military standards.

The MSMBJ64CAE3 is currently active in production. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when alternative sourcing is required.

Substiute Parts

MSMBJ64CAE3

Microchip TechnologyIn Stock: 898MSMBJ64CAE3 Datasheet

Current PartRFQ

SMBJ64CA-13

Diodes IncorporatedIn Stock: 4422SMBJ64CA-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of TVS diodes is determined by electrical parameter equivalence and mechanical compatibility. The following criteria establish valid substitution:

Electrical Parameters (Must Match):

• Voltage - Reverse Standoff (Typ): 64V
• Voltage - Breakdown (Min): 71.1V
• Voltage - Clamping (Max) @ Ipp: 103V
• Current - Peak Pulse (10/1000µs): 5.8A
• Power - Peak Pulse: 600W
• Bidirectional Channels: 1
• Type: Zener

Mechanical Parameters (Must Match):

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount

Operating Conditions (Must Be Compatible):

• Operating Temperature Range: Must support -65°C to 150°C or equivalent

The substitute part SMBJ64CA-13 manufactured by Diodes Incorporated meets all electrical parameter requirements and mechanical compatibility criteria. This part is functionally equivalent for circuit protection applications requiring 64V standoff voltage with 103V clamping characteristics in SMB surface-mount form factor.

Parameter Comparison

*Operating temperature lower limit differs: SMBJ64CA-13 rated to -55°C versus MSMBJ64CAE3 rated to -65°C. Applications requiring operation below -55°C must use the primary part.

Engineering Selection Recommendations

Primary Part: MSMBJ64CAE3 (Microchip Technology)

The MSMBJ64CAE3 is the recommended selection for new designs and applications requiring military-grade qualification. This part carries MIL-PRF-19500 qualification and is currently in active production status with 856 units in stock. The extended operating temperature range of -65°C to 150°C provides coverage for demanding thermal environments.

Substitute Part: SMBJ64CA-13 (Diodes Incorporated)

The SMBJ64CA-13 is electrically and mechanically equivalent to the MSMBJ64CAE3 for all critical TVS diode parameters. This part is suitable for applications where military qualification is not required. However, the product status is listed as discontinued at DiGi Electronics, which may impact long-term availability. The operating temperature lower limit of -55°C (versus -65°C for the primary part) must be evaluated against application requirements.

Compliance Considerations:

Both parts share identical RoHS non-compliance status, REACH unaffected status, and ECCN/HTSUS classifications. Neither part carries RoHS compliance certification.

Inventory and Supply:

The primary part (MSMBJ64CAE3) maintains active inventory of 856 units. The substitute part (SMBJ64CA-13) shows 4400 units in stock but carries discontinued status, indicating potential future supply constraints.

Frequently Asked Questions (FAQ)

Q: Can SMBJ64CA-13 be used as a direct replacement for MSMBJ64CAE3?

A: The SMBJ64CA-13 is electrically and mechanically equivalent for all critical TVS diode parameters including voltage ratings, current ratings, and package form factor. However, the operating temperature lower limit differs (-55°C versus -65°C). Applications operating below -55°C must use the MSMBJ64CAE3.

Q: What is the difference between the two parts?

A: The primary differences are manufacturer (Microchip versus Diodes Incorporated), product status (active versus discontinued), and operating temperature range. All electrical protection characteristics and mechanical dimensions are identical.

Q: Are both parts in the same package?

A: Yes. Both MSMBJ64CAE3 and SMBJ64CA-13 use the DO-214AA (SMB) surface-mount package with identical mechanical dimensions and pin configuration.

Q: Does the SMBJ64CA-13 have military qualification?

A: No. The SMBJ64CA-13 does not carry MIL-PRF-19500 qualification. The MSMBJ64CAE3 is qualified to this military standard.

Q: What happens if I use SMBJ64CA-13 in an application designed for MSMBJ64CAE3?

A: The SMBJ64CA-13 will function identically for circuit protection in applications operating within the -55°C to 150°C temperature range. Applications requiring operation below -55°C or military qualification must use the MSMBJ64CAE3.

Q: Why is SMBJ64CA-13 listed as discontinued?

A: The product status indicates discontinuation at DiGi Electronics, a major electronics distributor. This does not necessarily mean the part is unavailable from all sources, but future availability may be limited.

Q: Are there any RoHS or environmental compliance differences?

A: Both parts share identical RoHS non-compliance status and REACH unaffected classification. Neither part meets RoHS requirements.